package com.example.demo.aop;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;
import org.springframework.stereotype.Component;

@Aspect//切面类
@Component
public class UserAspect {

    // 切点
    @Pointcut("execution(* com.example.demo.controller.UserController.*(..))")
    public void pointcut() {

    }

    // 前置通知
    @Before("pointcut()")
    public void beforeAdvice() {
        System.out.println("前置通知");
    }

    // 前置通知
    @After("pointcut()")
    public void AfterAdvice() {
        System.out.println("后置通知");
    }

    // 环绕通知
    @Around("pointcut()")
    public Object aroundAdvice(ProceedingJoinPoint joinPoint) throws Throwable {
        System.out.println("进入环绕通知");
        Object obj = null;

        // 执行目标方法
        obj = joinPoint.proceed();
        System.out.println("退出环绕通知");
        return obj;
    }
}
